#include <windows.h>
/*
HRGN BitmapRegion(
	HBITMAP hBitmap, 
	COLORREF cTransparentColor = RGB(0,0,0), 
	BOOL bIsTransparent = TRUE);
*/
void DrawTransparentBitmap(
	CDC *pDC, CBitmap *Bitmap, 
	int xStart, int yStart, 
	int nWidth, int nHeight, COLORREF cTransparentColor);
